Angles
An angle that is exactly 90 degrees
What is a right angle?
A triangle with all acute angles
What is an acute triangle?
A quadrilateral with 4 right angles and 4 equal sides
What is a square?
A line with 2 endpoints
What is a line segment?
A figure with 5 sides
What is a pentagon?
An angle less than 90 degrees
What is an acute angle?
A triangle with one right angle
What is a right triangle?
A quadrilateral with 4 equal sides, but not necessarily 4 equal angles
What is a rhombus?
A line with one endpoint that continues indefinitely in one directon
What is a ray?
The shape of a stop sign
What is an octagon?
An angle between 90 and 180 degrees
What is an obtuse angle?
A triangle with 3 equal sides
What is an equilateral triangle?
A quadrilateral with 2 sets of parallel lines
What is a parallelogram?
When 2 lines intersect, the angles across from each other that have the same measurement
What are vertical angles?
A figure with 6 sides
What is a hexagon?
An angle that is exactly 180 degrees
What is a straight angle?
A triangle can have this many obtuse angles
What is one (obtuse angle)?
A quadrilateral with one set of parallel lines
What is a trapezoid?
2 angles along a straight line that are adjacent to each other and have a sum of 180 degrees
What are supplementary angles?
A 3-D shape with 6 sides that are all squares equal in size
What is a cube?
The tool used to measure angles
What is a protractor?
The sum of the angle measurements in a triangle
What is 180 degrees?
A parallelogram with 4 right angles
What is a rectangle?
The point at which 2 lines meet
What is a vertex?
Pi is used when finding the area of this figure
What is a circle?